Needle for collecting blood



Aug. 21, 1923.

S. A. PETROFF EDLE FOR COLLECTING BLOOD Filed Oct.

INVENTOR. fire/him) A. Pei/off now a citizen of the United States Patented Aug. 21, 1923 QUE ' STR'ASHIMIR A rE'rnorr,

or'TRUDnAU, nntwyonn. 7 7

' NEEDLE ronconnnorrive Bnoon.v

Application filed October as, 1921. rsriairn'as ioaea.

This invention is a needle adapted to fa cilitate the Collecting of blood for serological tests.

The object of the invention is, primarily,

to produce an instrument whereby such collECtlOIIOf blood may be accomplished n an expeditious and thoroughly sanitary manner and without infection to thepatient.

A further object of the invention is to provide a needle which will be practical for physicians, hospitals and laboratory men and one which will be simple in construction, inexpensive and capable of repeated use. 7 p, f

Speaking generally, the present invention embodies a hollow or tubular needle, sharpened at one endtofacilitate its introduction into the vein or artery of the patient, and provided exteriorly and intermediate its ends with a suitable clip, preferably of the spring variety, so formed as to enable the instrument to be securely clamped on a test tube or bottle in such manner that theblunt end of the needle willextend into the tube and its pointed end project exteriorly thereof into a convenient position for manipulation. This permits, the tube or bottle to be employed as'a handle for the needle while inserting such needle into'th'e vein or artery. When so' using the needle it may be steadied on thetest tube by the hand of the physician which, in grasping the tube, is adapted to overlie and hold the clamp firmly in posi tion against" inac vertent shifting. a 7

Features of the invention, other than those adverted to, will be apparent from the hereinafter detailed description, when read in conjunction with the" accompanying drawings, a i 1 The accompanying drawings illustrate one practical embodiment of the invention, but the'construction therein shown is to be understood as illustrative, only, and notes defining the limits of the invention. r V V Figure l is an edge elevation of an instrument embodying'the present invention.

Figure 2 shows the instrument housed w t it Prot i the instrument is shown in side elevation. Figured shows the instrument remoyed from the tube and ready for. use; and, T n

F igure, 4 shows the manner in. which the instrument and tube are held in the hand oft-he physician during use.

' tube. In this view, 7

eoi

In its preferred form, the .instrurnent is madein the form .of-a hollow or tubular needle A, about three or four 1 inches in length and of any convenient calibre, e. g., from 15 to 25 gauge. I is cut ofi square and. the other end thereof is cut on an angle to provide a sharp point B; V Secured to the exterior ot'theneedleand nearer fthe blunt end thereof is a clip C, preferably of the spring tongue variety. One end of the clip is rigidly secured to the needle and its free end extends along the needle in the direction of said blunt end,

One end of the needle- The clip is bowedoutwardly adjacent its point of attachment to theneedleand in a direction toward its free end is bent -towardtheneedle. Its free end is however bent-outwardly .on a sweeping'curve as .7

shown at D so as to provide aefinger' rest strument. it is v 1 The instruments are made n quant t es and after being thoroughly cleaned and-the tor the operator when manipulating the ;in- I needlessharpened they are preferably in- 'verted andplaced in individual containers,

preferably roundvbottom centrifuge-tubes" E. Inorder that the points of the needles may be properlyprotected, a wire F may .so assembled a needle brought into a tube will be supported in the tubew thits sharpened end free from the bottom o'l thetube as, shown in Figure-2..

qThe tubes. with the needles therein are T f a be run into the end of each needle" and when the mouth of the tube, and the instrument is tube while the sharp pointed end thereof will project interiorly thereof and in aline- :ment with the tube. The clip C straddles the wall of the tube, and, because of its resilient character, grips said wall tightly for the purpose of firmly securing the instru ment on the tube. The protecting wire F is now removed to condition the needle for use.

A tourniquet is now applied to the bent elbow of a patient, and, gripping the tube E and employing the same as a handle for the instrument, after the manner shown in Figure 4:, the physician introduces the needle into the median basilic vein or any other desired vein or artery, and firmly holds it in position so the'blood is permitted to flow from such vein or artery, without suction, through the central channel of the hollow needle and drip from the blunt end thereof directly into the tube E. During this op eration, the grip of the clip on the tube may be augmented by the grip of the physicians hand, since, as shown in Figure 4, the index finger is adapted to overlie the finger rest D of the clip and steady the instrument on the tube.

The instrument is held in position in the manner described for a sutficient period to permit the amount of blood which it is desired to collect to be deposited in the tube E, whereupon the instrument is withdrawn from the arm of the patient, removed from I the tube E, and the tube recorked to remain so until such time as the serological tests to be made thereon can be carried out.

It will be apparent from the foregoing description that the instrument of this in-: vention embodies many advantages. It is simple in construction and economical, and

may be sterilized and kept in sterile condition until used without the exercise of undue care. The convenience of drawing blood into a tube which may be also used for centrifuging is of importance, since it is not necessary to transfer the blood after coagulation into another tube, which praca tice is manifestly accompanied'by numerous disadvantages. The ease and firmness with which the needle may be attached to the test tube, as well as the fact that the test tube may be employed as a handle for the manipulation of the instrument, enables said instrument to be maderela'tively small and compact.

Aside from the advantages enumerated, it will be manifest that because of the pro- 7 nounced compactness of the article,vhen housed within its container in sterilized eon dition, the same may beconveniently carried in a physicians kit without unduly encumbering the same, and nevertheless, be i maintained at all times in a thoroughly sterile and sanitary condition. 7

I have referred, in the foregoing specification in describing the preferred practical embodiment of the invention, to particular sizes which I have found to operate efiicient- 1y. It will be understood,vhowever, that the instrument may be made inothersizes than is to be understood as broadly novel as, is

commensurate with the appendedclaims.

Having thus fully described the invention, what I claim as new and desire to secure by Letters Patent is:

1. An instrument for collecting blood em- 7 Y bodying a hollow needle sharpened at one end and provided intermediate its ends with a clip adapted to straddle the wall of a container to support the needle, on the container with the sharp end of the needle,

projecting from the container and the other end of the needle extending into the container, whereby blood flowingthrough the needle is deposited directly within'the container. 7 7

2. An instrument for collecting blood embodying a hollow needle, sharpened atone end and provided on its exterior with a clip adapted to rigidly support the needle one container, in such position to the container that blood flowing through the needle will be deposited directly in the container.

3. An instrument for collecting blood em bodying a hollow needle sharpened atone end and provided exteriorly with a. spring clip for rigidly mounting the needle on a container in such manner that blood flowing through the needle'will be deposited ,directly in the container. e V V k 4. An instrument for collecting blood emebodying a hollow needle pointed atone end. a spring clip rigidly secured to the needle and adapted to' press against the exterior of the wall of a container intov which" container one end of the needle ex tends, while the pointed end of the needle projects exteriorl y of the container, whereby blood flowing throughtheneedle is adapted to be deposited directly in the container.

5. An. assemblage of the character dey scribed embodying a hollow needle sharpened at one end and provided'intermediate its ends with a spring clip, a container of greater length than the needle and provided 1 with a filling opening through which the i and firmly mounted on the container by container while the other end of theneedle' Will extend into the interior of the container, so that the container may be used' as a handle to manipulate the needle'iwhile the blood flowing through the needle is deposited directly in the container.

6. An assemblage of the character described embodying a hollow needle, sharp at one end, a tube open at one end and of suflicient length to receive "and completely house the'needle when. the is siealed, l

and means forrigidly mounting the needle .15 r r I on the open end of thetube after the tube f'i has been unsealed and the needle removedfl} therefrom, said'needle being supported on] the tube so'thatblood flowing through the needle is deposited directly in the tube;

'In testimony Whereof'I foregoing specification.

'STRASHIMIR A; PETROFF;

the tube in such position that its pointed 7 end will project beyond the open endof the tube While its other end will extend 'into' hare signed, the f 

